GE 15k, Operator'S Manual

Page: 29 / 128

29
engine Maintenance
When all engine servicing is complete, replace 15 Amp fuse
in control board and reset exercise timer.
WaRninG Unintentional sparking could cause fire or electric
shock resulting in death or serious injury.
When aDjUSTinG oR MakinG RePaiRS To yoUR GeneRaToR
• Disconnect the spark plug wire from the spark plug and place the
wire where it cannot contact spark plug.
When TeSTinG FoR enGine SPaRk
• Use approved spark plug tester.
• DO NOT check for spark with spark plug removed.
adjust Valve Lash
1. Valve lash adjustment must be performed on a COLD
engine
2. Remove both spark plugs to ease manual rotation of
engine crankshaft.
3. Access to rotate the engine by hand is available by:
a. Removing the engine intake screen in the
battery compartment such that the crankshaft nut is
accessible. Care must be taken when reassembling
this screen using the self tapping screws as over-
torqueing will strip out the partition material.
b. OR remove the front alternator outlet air
scoop by removing the four screws that secure it.
The crankshaft may be rotated via the aluminum
alternator fan. Care should be taken not to damage
the fan, and to reinstall the alternator outlet air scoop
in the proper orientation.
4. Set the No. 1 cylinder at ¼” (6mm) past Top Dead
Center (TDC) on the compression stroke.
5. Using a feeler gage (A), measure the valve clearance.
6. The proper valve clearance is .005” (0.13mm) for both
the intake and exhaust.
7. Adjust the clearance by loosening the lock nut (B),
then turn the adjusting screw (C).
8. Once the clearance is properly set, hold the adjusting
screw while torqueing the lock nut to 70 in-lbs (8Nm)
9. Repeat for cylinder No. 2
a
B
c
a
B
c
WaRninG Inserting fingers between fan blades could result in
serious injury. Use a plastic tool to rotate fan blades.